LiftMaster MGJ Medium-Duty Gear-Reduced Jackshaft Operator for Rolling Grilles and Shutters - Manual (Page 2)

Congratulations on purchasing a quality, LiftMaster Medium Duty
Commercial Door Operator. Your new operator is capable of
operating up to 12 cycles per hour or 50 cycles per day. It is
equipped with a built in radio receiver that is compatible with our existing 315 MHz product line as well as a Timer To Close (TTC)
feature that can be enabled when LiftMaster Commercial Protector
System
® is installed and aligned properly.
DETERMINE THE WIRING TYPE
The functionality of this operator is based on the wiring type. The
operator is shipped from the factory in standard C2 wiring type
(factory default). Some wiring types will require an optional safety
device. Refer to the following descriptions of wiring types,
requirements and programming.
NOTE: 1. The LED on the logic board will blink once when in C2
and twice when in B2.
2. The operator will automatically convert to B2 wiring (option
D) when Monitored Safety Device is installed. If the
Monitored Safety Device is removed, the operator will go
into a Restricted Close mode**. Turn power OFF and ON to
reset wiring type.
** Restricted close mode requires a constant pressure close
command. The operator will begin closing after a 5 second delay
and will continue to close to the close limit switch. The operator
will stop if the pressure to close is released before reaching the
close limit.
To prevent possible SEVERE INJURY or DEATH, install reversing
sensors when:
• The radio is used.
• The 3-button control station is out of sight of the door.
• Or ANY other control (automatic or manual) is used.
Reversing devices are recommended for ALL installations.
ATTENTION
AVERTISSEMENT AVERTISSEMENT
AVERTISSEMENT
WARNING
CAUTION CAUTION
WARNING
WARNING
PRECAUCIÓN ADVERTENCIA
ADVERTENCIA ADVERTENCIA
A B
C2 WIRING TYPE WITHOUT MONITORED SAFETY DEVICE
(Factory Default) C2 WIRING TYPE WITH MONITORED SAFETY DEVICE
• Momentary contact to open and stop with constant
pressure to close.
• Open override that reverses when closing by any opening
device.
• Wiring for safety device to reverse. NOTE: The operator
will automatically convert to B2 wiring (option D) when
Monitored Safety Device is installed. (See accessories
page for Monitored Safety Devices)
• Timer to Close (TTC) feature not available.
• Momentary contact to open and stop with constant
pressure to close.
• Open override that reverses when closing by any opening
device.
• Wiring for safety device to reverse. NOTE: The operator
will automatically convert to B2 wiring (option D) when
Monitored Safety Device is installed. (See accessories
page for Monitored Safety Devices)
• Timer to Close (TTC) feature not available.
Remove any monitored safety devices.
Disconnect then reconnect power to the operator.
Press and hold the LEARN and STOP buttons until the LED goes
out (approximately 3 seconds). Press and hold the LEARN and CLOSE buttons until the LED goes
out (approximately 3 seconds).
NON-MONITORED SAFETY DEVICE MONITORED SAFETY DEVICE
Sensing
Edge
Photo Eye
TTC LED
AUX ANT R27
L5
TP1 C20 C9
C29
R24
J2
C21
J4
K2 LT
P1
C32 U4 D7 D6 D5 D4
R25 U1 C31
D14
C18
014A1030
^^^^
D9
LEARN 1 2 3 4 5 6 7
LMEP1 LMEP2 INTRLK COM STOP CLOSE OPEN
STOP CLOSE OPEN
AUX ANT
TTC LED
AUX ANT
R27
L5
TP1 C20 C9
C29
R24
J2
C21
J4
K2 LT
P1
C32 U4 D7 D6 D5 D4
R25 U1 C31
D14
C18
014A1030
^^^^
D9
LEARN 1 2 3 4 5 6 7
LMEP1 LMEP2 INTRLK COM STOP CLOSE OPEN
STOP CLOSE OPEN
AUX ANT
Logic Board
Logic Board
Electrical Box
Electrical Box
D14 LED
LEARN
1 2 3 4 5 6 7
STOP CLOSE OPEN
D14 LED
LEARN
1 2 3 4 5 6 7
STOP CLOSE OPEN
RESET TO C2 WIRING TYPE (Factory Default) TO PROGRAM
2
B A S I C P R O G R A M M I N G
I N T R O D U C T I O N